## Search found 7 matches

- Tue Sep 22, 2020 8:32 pm
- Forum: Programming languages
- Topic: Solving with pencil and paper
- Replies:
**2** - Views:
**990**

### Solving with pencil and paper

I have a curiosity about solving problems with “pencil/paper”, but my question is not because I am considering the use of this method. And I am sorry if this question has already been answered, I searched in the forum with “pencil/paper”, found 126 matches and read many of them, but could not find t...

- Sun Sep 20, 2020 2:40 am
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 710
- Replies:
**15** - Views:
**4586**

### Re: Problem 710

Hi pjt33, thank you very much for your reply. And you are correct, those two columns you indicated are duplicates, and then I realized that their neighbors column RZ and ACO are also duplicated. So, I am missing at least four sums instead of two as I had thought, but after your post now I think that...

- Sat Sep 19, 2020 6:41 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 710
- Replies:
**15** - Views:
**4586**

### Re: Problem 710

Hello, I am partially happy to report that my spreadsheet grew to 822 permutations, so now I am only missing two! (I mean of the 824 sums to get a total of 20). But I will be happy when I find the other two. Any hints, even of the type "you are getting warmer" game, will be very much appre...

- Sat Sep 19, 2020 6:01 pm
- Forum: Number
- Topic: Properties of Square Spirals (Ref. Problems 28 and 58)
- Replies:
**0** - Views:
**4201**

### Properties of Square Spirals (Ref. Problems 28 and 58)

Problem 58 aroused my curiosity about Square Spirals (later I found Problem 28, which is also about these Spirals), so I made a spreadsheet to find out their properties, and got the following Square Spiral Rules, which I hope will be interesting, at least some of them. Note: These are just my observ...

- Sat Sep 19, 2020 1:07 am
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 058
- Replies:
**32** - Views:
**13592**

### Re: Problem 058

This problem aroused my curiosity about square spirals, so I made a spreadsheet to find out their properties, and got the following Square Spiral Rules, which I hope will be interesting, at least some of them. I followed the same pattern to create my spirals as the original problem. Note: These are ...

- Fri Aug 28, 2020 3:55 am
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 710
- Replies:
**15** - Views:
**4586**

### Re: Problem 710

Hello mdean! Thank you for the quick reply. Your advice is reasonable, but my OCD kicked in and, because my programming skills are very limited, I had to find the 842 sequences manually in Excel. It is hard for me to quit and leave things incomplete. But I thought this was going to be faster than wh...

- Thu Aug 27, 2020 7:13 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 710
- Replies:
**15** - Views:
**4586**

### Re: Problem 710

The statement for this problem indicates that there are 824 symmetrical sequences that add to 20, and that contain at least one time the element 2. That number of permutations seemed too high to me, after all 20 is a low number, but there are many unexpected results in mathematics, which is one of t...